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Finding the Fourth Proportional to 643,168.82, 964,898.79 and 216,693.06

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Solution

The fourth proportional to 643,168.82, 964,898.79 and 216,693.06 is: 325,088.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    643,168.82 : 964,898.79 = 216,693.06 : x
  2. Step 2: Convert to fraction form
    643,168.82/964,898.79 = 216,693.06/x
  3. Step 3: Cross multiply
    643,168.82x = 964,898.79 × 216,693.06
  4. Step 4: Simplify right side
    643,168.82x = 209,086,866,964.43
  5. Step 5: Solve for x
    x = 209,086,866,964.43/643,168.82
  6. Step 6: Final answer
    x = 325,088.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.